CSS Transform Skew [duplicate]

Does anyone know how to achieve skew like this:

Using CSS's new transform property?

As you can see I'm trying to skew both corners, anyone know if this is possible?

.red.box {
  background-color: red;
  transform: perspective( 600px ) rotateY( 45deg );
}

Then HTML:

<div class="box red"></div>

from http://desandro.github.com/3dtransforms/docs/perspective.html

CSS:

#box {
    width: 200px;
    height: 200px;
    background: black;
    position: relative;
    -webkit-transition: all 300ms ease-in;
}
#box:hover {
    -webkit-transform: rotate(-180deg) scale(0.8);
}
#box:after, #box:before {
    display: block;
    content: "\0020";
    color: transparent;
    width: 211px;
    height: 45px;
    background: white;
    position: absolute;
    left: 1px;
    bottom: -20px;
    -webkit-transform: rotate(-12deg);
    -moz-transform: rotate(-12deg);
}
#box:before {
    bottom: auto;
    top: -20px;
    -webkit-transform: rotate(12deg);
    -moz-transform: rotate(12deg);
}​

HTML:

<div id=box></div>​

Works in Chrome and FF 4: http://jsfiddle.net/rudiedirkx/349x9/

This might help: http://jsfiddle.net/rudiedirkx/349x9/2880/

And this too (from Erwinus' comment): http://css-tricks.com/examples/ShapesOfCSS/

I think you mean webkit transform.. please check this URL out http://www.the-art-of-web.com/css/3d-transforms/ it could help you.